EP 2115660 A2 20091111 - SECURE FILE ENCRYPTION
Title (en)
SECURE FILE ENCRYPTION
Title (de)
SICHERE DATEIENVERSCHLÜSSELUNG
Title (fr)
CHIFFREMENT SÉCURISÉ DE FICHIER
Publication
Application
Priority
- US 2008052228 W 20080128
- US 89780207 P 20070126
Abstract (en)
[origin: WO2008124201A2] A technique for secure file encryption first choose a file encryption key randomly among a set of file encryption keys and encrypts a file using the chosen file encryption key based on a set of encryption rules. The file encryption key can then be encrypted via a directory master secret (DMS) key for an extra layer of security so that an intruder cannot decrypt the encrypted file even if the intruder gains access to the DMS-encrypted file encryption key. Finally, the DMS-encrypted file encryption key can be stored in a metadata associated with the file.
IPC 8 full level
G06F 7/04 (2006.01); G06F 21/24 (2006.01); H04L 9/08 (2006.01)
CPC (source: EP US)
G06F 21/6218 (2013.01 - EP US); H04L 9/0822 (2013.01 - EP US); H04L 9/14 (2013.01 - EP US); G06F 2221/2107 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008124201 A2 20081016; WO 2008124201 A3 20091230; EP 2115660 A2 20091111; EP 2115660 A4 20111102; JP 2010517448 A 20100520; US 2010070778 A1 20100318
DOCDB simple family (application)
US 2008052228 W 20080128; EP 08780383 A 20080128; JP 2009547462 A 20080128; US 44858408 A 20080128